I'd be burring you'd be burring she'd be burring we'd be burring you'd be burring they'd be burring
Perfect
I should've burred you should've burred she should've burred we should've burred you should've burred they should've burred
V-ing perfect
I should've been burring you should've been burring she should've been burring we should've been burring you should've been burring they should've been burring
Negation
Simple form
I shouldn't burr you shouldn't burr she shouldn't burr we shouldn't burr you shouldn't burr they shouldn't burr
V-ing form
I shouldn't be burring you shouldn't be burring she shouldn't be burring we shouldn't be burring you shouldn't be burring they shouldn't be burring
Perfect
I shouldn't have burred you shouldn't have burred she shouldn't have burred we shouldn't have burred you shouldn't have burred they shouldn't have burred
V-ing perfect
I shouldn't have been burring you shouldn't have been burring she shouldn't have been burring we shouldn't have been burring you shouldn't have been burring they shouldn't have been burring
Interrogative form
Simple form
should I burr? should you burr? should she burr? should we burr? should you burr? should they burr?
V-ing form
should I be burring? should you be burring? should she be burring? should we be burring? should you be burring? should they be burring?
Perfect
should I have burred? should you have burred? should she have burred? should we have burred? should you have burred? should they have burred?
V-ing perfect
should I have been burring? should you have been burring? should she have been burring? should we have been burring? should you have been burring? should they have been burring?
Interro-negative form
Simple form
shouldn't I burr? shouldn't you burr? shouldn't she burr? shouldn't we burr? shouldn't you burr? shouldn't they burr?
V-ing form
shouldn't I be burring? shouldn't you be burring? shouldn't she be burring? shouldn't we be burring? shouldn't you be burring? shouldn't they be burring?
Perfect
shouldn't I have burred? shouldn't you have burred? shouldn't she have burred? shouldn't we have burred? shouldn't you have burred? shouldn't they have burred?
V-ing perfect
shouldn't I have been burring? shouldn't you have been burring? shouldn't she have been burring? shouldn't we have been burring? shouldn't you have been burring? shouldn't they have been burring?